/*
 * Copyright (c) 2018, 2024, Oracle and/or its affiliates.
 *
 * This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License, version 2.0, as published by
 * the Free Software Foundation.
 *
 * This program is designed to work with certain software that is licensed under separate terms, as designated in a particular file or component or in
 * included license documentation. The authors of MySQL hereby grant you an additional permission to link the program and your derivative works with the
 * separately licensed software that they have either included with the program or referenced in the documentation.
 *
 * Without limiting anything contained in the foregoing, this file, which is part of MySQL Connector/J, is also subject to the Universal FOSS Exception,
 * version 1.0, a copy of which can be found at http://oss.oracle.com/licenses/universal-foss-exception.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License, version 2.0, for more details.
 *
 * You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

package com.mysql.cj.util;

/**
 * Utilities to manipulate internal data type formats.
 */
public class DataTypeUtil {

    /**
     * Interpret a BIT value as a long.
     *
     * @param bytes
     *            byte buffer
     * @param offset
     *            offset in buffer
     * @param length
     *            number of bytes to use
     * @return long value
     */
    public static long bitToLong(byte[] bytes, int offset, int length) {
        long valueAsLong = 0;
        for (int i = 0; i < length; i++) {
            valueAsLong = valueAsLong << 8 | bytes[offset + i] & 0xff;
        }
        return valueAsLong;
    }

}
